Chen, Shanwen
Chen, Xin
Ning, Bo
Cao, Yong
Wang, Shuo
Article History
Received: 4 May 2020
Accepted: 15 December 2020
First Online: 1 February 2021
Ethics approval and consent to participate
: This study was approved by the Ethics Committee of Beijing Tiantan Hospital (KY2017-076-01).
: Not applicable.
: The authors declare that they have no competing interests.